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Astronauts repair space station computer on emergency spacewalk

After receiving parts and supplies from SpaceX on Sunday, astronauts replace failed computer for critical control systems

Two US astronauts floated outside the International Space Station on Wednesday to replace a failed computer that serves as a backup to critical control systems, including the outpost's solar panel wings.

Flight engineers Rick Mastracchio and Steve Swanson left the station's Quest airlock just after 10am EDT for what was expected to be a two-and-a-half-hour spacewalk. They carried with them a spare computer to be installed in the central section of the station's exterior power truss.

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